diff --git a/doc/mlogfilter.rst b/doc/mlogfilter.rst
index c169181d..0d372714 100644
--- a/doc/mlogfilter.rst
+++ b/doc/mlogfilter.rst
@@ -13,6 +13,8 @@ If several log files are provided, **mlogfilter** will merge them by timestamp
 and insert a marker at the beginning of each line, before applying any of the
 other filters.
 
+NOTE: logv2 format (MongoDB 4.4+) is not supported yet.
+
 Usage
 ~~~~~
 
diff --git a/doc/mloginfo.rst b/doc/mloginfo.rst
index 5aaaf5b0..84171948 100644
--- a/doc/mloginfo.rst
+++ b/doc/mloginfo.rst
@@ -7,6 +7,7 @@ mloginfo
 **mloginfo** takes a log file and reports :ref:`default-info` about the
 log file. The script also has some options for additional :ref:`info-sections`.
 
+NOTE: logv2 format (MongoDB 4.4+) is not supported yet.
 
 Usage
 ~~~~~
diff --git a/doc/mplotqueries.rst b/doc/mplotqueries.rst
index 37fa257f..1619bcc4 100644
--- a/doc/mplotqueries.rst
+++ b/doc/mplotqueries.rst
@@ -7,6 +7,8 @@ mplotqueries
 **mplotqueries** is a tool to visualize operations in MongoDB log files. It has
 several different plot types and can group information in various ways.
 
+NOTE: logv2 format (MongoDB 4.4+) is not supported yet.
+
 Usage
 ~~~~~